2019 BMW i3 gets a 42 kWh battery

2019 BMW i3 with 42,2 kWh battery

Now it’s official. The 2019 model year of the BMW i3 finally gets the long-awaited 120 Ah battery cells from Samsung SDI. The 120 Ah battery cells give the battery pack a total capacity of 42,2 kWh (96 x 120 Ah x 3,667 V).


This is the second battery capacity upgrade that the BMW i3 gets since its launch.

  • Original battery cells: 60 Ah – EPA range of 81 miles (130 km)
  • First upgrade (2017): 94 Ah – EPA range of 115 miles (185 km)
  • Second upgrade (2018): 120 Ah – EPA range of 153 miles (246 km)


In Europe it’ll be advertised with a 260 km (161 miles) range, which BMW considers to be realistic. However, the WLTP range is more optimistic and will be 285-310 km.

The sportier version (BMW i3s) and the extended range version (REX) will also get the new battery cells.

Production begins in November 2018.


This is probably the last battery capacity upgrade that the BMW i3 gets before a major facelift or being completely replaced by a new model.



More info:



This Post Has 9 Comments

  1. Baby steps, baby steps

  2. Is it only 36kWh useable from that chart?

    Why are they all quoting non useable capacity except for Hyundai/Kia who quote useable capacity

  3. 36kWh was my assumption based on the DoD of the previous version but it’s seems that the usable battery will be 39.7kWh (~90% of DoD).
    An update of the chart is planned on next days after the Paris Motor Show.

    For your questions it’s also a marketing strategy
    Mercedes communicate on usable battery (B class with 28kWh) even if the total capacity is 36kWh.

  4. Any idea on weight comparable to previous battery packs?

    I would like to see a reduced pack size be maintained a cheaper lighter REX version.

  5. Go bmw go… 2 years after Zoe real 41kwh

  6. REX dropped from Europe, guess its emissions aren’t good enough post diesel gate?

  7. To see if a car has a reliable range I’ve come up with a calculation. Take the epa range and divide it by the nedc range. The closer you come to 1 the better it is. Example:
    Tesla model s 60: 400km nedc, 334 km epa -> 0,835
    BMW i3 120Ah: 422km nedc (est), 246 km epa -> 0,58

    To get realistic fast highway driving you multiply the factor above with the EPA range of the car.

    The i3 is one of the worst cars when it comes to range. I drove the 33kwh Bev 110 km and I started at 120 km/h but had to lower the speed to 90 km/h in order to make it there…

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